<template>
  <div id="app">
    <div id="main" style="width: 1000px; height: 600px"></div>
  </div>
</template>

<script>
import * as echarts from "echarts";
export default {
  methods: {
    drawChart() {
      var chartDom = document.getElementById("main");
      var myChart = echarts.init(chartDom);
      var option;

      const colors = ["#5470C6", "#91CC75", "#EE6666"];
      option = {
        color: colors,
        tooltip: {
          trigger: "axis",
          axisPointer: {
            type: "cross",
          },
        },
        grid: {
          right: "20%",
        },
        toolbox: {
          feature: {
            dataView: { show: true, readOnly: false },
            restore: { show: true },
            saveAsImage: { show: true },
          },
        },
        legend: {
          data: ["Evaporation", "Precipitation", "Temperature"],
        },
        xAxis: [
          {
            type: "category",
            axisTick: {
              alignWithLabel: true,
            },
            // prettier-ignore
            data: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
          },
        ],
        yAxis: [
          {
            type: "value",
            name: "Evaporation",
            position: "right",
            alignTicks: true,
            axisLine: {
              show: true,
              lineStyle: {
                color: colors[0],
              },
            },
            axisLabel: {
              formatter: "{value} ml",
            },
          },
          {
            type: "value",
            name: "Precipitation",
            position: "right",
            alignTicks: true,
            offset: 80,
            axisLine: {
              show: true,
              lineStyle: {
                color: colors[1],
              },
            },
            axisLabel: {
              formatter: "{value} ml",
            },
          },
          {
            type: "value",
            name: "温度",
            position: "left",
            alignTicks: true,
            axisLine: {
              show: true,
              lineStyle: {
                color: colors[2],
              },
            },
            axisLabel: {
              formatter: "{value} °C",
            },
          },
        ],
        series: [
          {
            name: "Evaporation",
            type: "bar",
            data: [
              2.0, 4.9, 7.0, 23.2, 25.6, 76.7, 135.6, 162.2, 32.6, 20.0, 6.4,
              3.3,
            ],
          },
          {
            name: "Precipitation",
            type: "bar",
            yAxisIndex: 1,
            data: [
              2.6, 5.9, 9.0, 26.4, 28.7, 70.7, 175.6, 182.2, 48.7, 18.8, 6.0,
              2.3,
            ],
          },
          {
            name: "Temperature",
            type: "line",
            yAxisIndex: 2,
            data: [
              2.0, 2.2, 3.3, 4.5, 6.3, 10.2, 20.3, 23.4, 23.0, 16.5, 12.0, 6.2,
            ],
          },
        ],
      };
      option && myChart.setOption(option);
    },
  },
  mounted() {
    this.drawChart();
  },
};
</script>


<style lang="less" scoped>
</style>